Shop our range of high quality replacement Window Lock Mechanisms from top brands such as ERA, Mila, Saracen and Maco to name but a few. The window lock mechanism sits inside the window frame and is the part that is driven by the window handle, enabling you to open, close and lock your window. This part can occasionally fail and can be replaced with relative ease. We have a team of friendly, expert staff who can help with choosing, measuring or fitting any of our products. Visit our technical help page to find the different ways of contacting us with any query.